Improvement in grinding-mills



i which the'following is a specification UNrrEn STATES PAT NT- QFFICE.

JAMES M. COLLIER, OF GADSDEN, ALABAMA.

IMPROVEMENT IN GRINDING-MILLS},

Specification forming part of Letters Patent N 0. 173,846, dated February 22, 1876; application filed January 15, 1876. i

' To all whom it may concern Be it known that I, JAMES M. COL IER, of Gadsden, Etowah county, Alabama, have invented a new and Improved Grinding-Mill, of

My invention consists of a contrivance for adjusting, holding, and regulating a concave bed-stone to a revolving cylinder, and as hereinafter described. I

Figure 1- is a longitudinal sectional elevation of my improved grinding-mill, taken on line w as, Fig. and Fig. 2 is a plan view.

Similar letters of reference indicate corre which are suspended 'from the top of the frame It by screwrods i, by which the bedstone is adjusted to the runner as to height and for a uniform contact of the faces, and the base is arranged on said supports to slide toward and from the runner for regulating the stones for grinding fine or coarse. The lever hopper m is supportedat the rear by the adj usting-rods a and clamp-screws o for regulating the feed.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The concave bed-stone 1) arranged in case 0, pivoted to the adjusting-bed f, substair' tially as specified.

2. The combination of adjusting-basef, case 0, bed-stone b, and revolving cylinder a, substantially as specified.

3. The adjusting-supports g, and rods '5, combined with base f, bed-stone b, and revolving stone at, substantially as specified.

V 4. The lever j, rod is, and adjusting nut I, combined with adjusting-base f, bed-stone b, and revolving stone a, substantially as specitied.

5. The hopper m, adjusting-rods n, and

clamp-screws 0, combined with revolving stone a, substantially asspecified.

JAMES MADISON COLLIER.

Witnesses:

JOHN G. S. SMITH, BENJAMIN F. HoDGEs. 

